Merge pull request #2656 from sundm75/sundm75

[bsp][ls1c] Add watchdog library function and driver .

2 files changed, 123 insertions, 0 deletions

diff --git a/bsp/ls1cdev/libraries/ls1c_wdog.c b/bsp/ls1cdev/libraries/ls1c_wdog.c
new file mode 100644
index 0000000000..4034281d10
--- /dev/null
+++ b/bsp/ls1cdev/libraries/ls1c_wdog.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-05-06     sundm75       first version
+ */
+
+#include "ls1c.h"
+#include "ls1c_wdog.h"
+
+/*
+系统先配置看门狗使能位 WDT_EN;
+然后配置看门狗计数器的初始值 WDT_TIMER;
+当设置 WDT_SET 后，计数器开始减计数;
+当还没有减到 0 时，重置看门狗计数器，系统不会重启;
+当看门狗计数器减到 0 时，则系统重启。
+*/
+
+static unsigned int WDT_timer = 0;
+
+/* 暂时为空 */
+unsigned int Wdog_Init(void)              
+{
+    return 0;
+}
+
+/* 配置看门狗使能寄存器(WDT_EN) */
+unsigned int Wdog_Enable(void)       
+{
+    unsigned int ctrl;
+    ctrl = (WDT_EN);
+    ctrl |= 0x01;
+
+    WDT_EN = ctrl;
+    return 0;
+}
+
+/* 配置看门狗失能寄存器(WDT_EN) */
+unsigned int Wdog_Disable(void)           
+{
+    unsigned int ctrl;
+    ctrl = (WDT_EN);
+    ctrl &= ~0x01;
+    WDT_EN = ctrl;
+    return 0;
+}
+
+/* 配置看门狗设置寄存器 (WDT_SET) */
+unsigned int Wdog_Set(void)               
+{
+    unsigned int ctrl;
+    ctrl = (WDT_SET);
+    ctrl |= 0x01;
+    WDT_SET = ctrl;
+    return 0;
+}
+
+/* 配置看门狗设置寄存器 (WDT_SET) */
+unsigned int Wdog_Reset(void)             
+{
+    unsigned int ctrl;
+    ctrl = (WDT_SET);
+    ctrl &= ~0x01;
+    WDT_SET = ctrl;
+    return 0;
+}
+
+/* 获得看门狗计数器(WDT_timer) 的值*/
+unsigned int Wdog_GetValue(void)          
+{
+    unsigned int cnt;
+    cnt = (WDT_TIMER);
+    return cnt;
+}
+
+/* 配置看门狗计数器(WDT_timer)的值*/
+unsigned int Wdog_LoadValue(unsigned int cnt)    
+{
+    WDT_TIMER = cnt;
+    WDT_timer = cnt;
+    return 0;
+}
+
+/* 获得看门狗计数器设定值 */
+unsigned int Wdog_GetPreValue(void)    
+{
+    return WDT_timer;
+}
diff --git a/bsp/ls1cdev/libraries/ls1c_wdog.h b/bsp/ls1cdev/libraries/ls1c_wdog.h
new file mode 100644
index 0000000000..a4717eedbf
--- /dev/null
+++ b/bsp/ls1cdev/libraries/ls1c_wdog.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-05-06     sundm75       first version
+ */
+
+#ifndef _LS1C_WDOG_H_
+#define _LS1C_WDOG_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+unsigned int Wdog_Init(void);                   // 暂时为空
+unsigned int Wdog_Enable(void);                 // 看门狗使能寄存器（WDT_EN）
+unsigned int Wdog_Disable(void);                // 看门狗失能寄存器（WDT_EN）
+unsigned int Wdog_Set(void);                    // 看门狗设置寄存器 (WDT_SET)
+unsigned int Wdog_Reset(void);                  // 看门狗设置寄存器 (WDT_SET)
+unsigned int Wdog_GetValue(void);               // 获得看门狗计数器（WDT_timer）
+unsigned int Wdog_LoadValue(unsigned int cnt);  // 设置看门狗计数器（WDT_timer）
+unsigned int Wdog_GetPreValue(void);            // 获得看门狗计数器设定值
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LS1C_WDOG_H_ */
+